[SOLVED] Can I name a JavaScript function and execute it immediately?


I have quite a few of these:

function addEventsAndStuff() {
  // bla bla

function sendStuffToServer() {
  // send stuff
  // get HTML in response
  // replace DOM
  // add events:

Re-adding the events is necessary because the DOM has changed, so previously attached events are gone. Since they have to be attached initially as well (duh), they’re in a nice function to be DRY.

There’s nothing wrong with this set up (or is there?), but can I smooth it a little bit? I’d like to create the addEventsAndStuff() function and immediately call it, so it doesn’t look so amateuristic.

Both following respond with a syntax error:

function addEventsAndStuff() {

(function addEventsAndStuff() {

Any takers?


There’s nothing wrong with the example you posted in your question.. The other way of doing it may look odd, but:

var addEventsAndStuff;
(addEventsAndStuff = function(){
    // add events, and ... stuff

There are two ways to define a function in JavaScript. A function declaration:

function foo(){ ... }

and a function expression, which is any way of defining a function other than the above:

var foo = function(){};
var foo = {bar : function(){}};


function expressions can be named, but their name is not propagated to the containing scope. Meaning this code is valid:

(function foo(){
   foo(); // recursion for some reason

but this isn’t:

(function foo(){
foo(); // foo does not exist

So in order to name your function and immediately call it, you need to define a local variable, assign your function to it as an expression, then call it.

Answered By – Mark

Answer Checked By – Clifford M. (BugsFixing Volunteer)

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